Category Archives: Unity

Firefox unable to bypass Webmin Connection failure

Since Firefox 33 a “Secure Connection Failed” error can no longer be bypassed using the “I Understand the Risks” button. That buttion is gone! It turns out that Firefox now requires self signed certificates to be 1024 bits or longer where older versions only required 512 bits. Therefore you need to make a new certificate that is long enough.

You can fix this right from Webmin if you use another browser (such as Chrome or Chromium) that lets you bypass this type of error . Otherwise you can log in to your server and temporarily disable SSL in webmin by setting ssl=0 in /etc/webmin/miniserv.conf and restart webmin with “/etc/init.d/webmin restart”.

Then, either way, you can login to the Webmin web UI and select: Webmin -> Webmin Configuration -> SSL Encryption -> Self Signed Certificate. Fill in the form (or leave the defaults) and then click the Create Now button. This will update your self-signed certificate for Webmin and you will now be able to access the page from Firefox 33 (With the usual browser warning about an untrusted connection).

If you temporarily disabled ssl you will need to re-enable it with ssl=1 in /etc/webmin/miniserv.conf and restart webmin with “/etc/init.d/webmin restart”.

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Sorry, Ubuntu 12.04 has experienced internal error popup–workaround

I keep getting a popup that says “Ubuntu has experienced an internal error” without any noticeable other symptoms. I believe this is due to a bug in the program apport. Until it’s fixed I’ve disabled the program from running on startup. Open a terminal and:

gksu gedit /etc/default/apport

and then change “enabled=1” to “enabled=0”

and save the file. Then to get rid of the running program either reboot or:

sudo service apport stop

Issues with an Older Computer

I put together an old Pentium 4 system with an ATI 9250 AGP card hoping to use it as a development/test box. I have OpenGL working, to some extent, using the Radeon driver with KMS. At least

glxinfo | grep rendering

says

direct rendering: Yes

Nevertheless, the system boots into Gnome Classic even when Ubuntu is selected. The compiz configuration looks like Unity should run but it does not. It looks Like I won’t be able to use that system to play with Unity.

I wasn’t able to get Gnome 3 working from the Gnome3 team’s PPA on the box either. It seemed to install okay, and booted to the login screen but the actual login failed. The ppa-purge program worked fine though so I didn’t have to reinstall the system from scratch.